Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
9
320 - Political science
7
370 - Education
6
330 - Economics
5
363 - Other social problems & services
5
400 - Language
5
600 - Technology
5
610 - Medicine & health
5
333 - Economics of land & energy
4
800 - Literature & rhetoric
4
140 - Specific philosophical schools
3
300 - Social sciences
3
410 - Linguistics
3
780 - Music
3
900 - History & geography
3
301 - Sociology & anthropology
2
581 - Specific topics in natural history
2
612 - Human physiology
2
620 - Engineering & allied operations
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
200 - Religion
1
296 - Judaism
1
340 - Law
1
500 - Natural sciences & mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
590 - Animals (Zoology)
1
630 - Agriculture & related technologies
1
720 - Architecture
1
791 - Public performances
1